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Down-hole Shuttle Device of Selective Stimulation

IP.com Disclosure Number: IPCOM000241953D
Publication Date: 2015-Jun-10
Document File: 1 page(s) / 14K

Publishing Venue

The IP.com Prior Art Database

Abstract

A down-hole shuttle device that can be deployed in a well via. a workstring or wireline to selectively stimulate a targeted zone or activate a pre-installed down-hole device. This shuttle device can be used to support sleeveless stimulation operations, Frac with casing deployment, one trip frac/stim operatons, and remote tool activation. Construction: Shuttle pig body has a main flow passage axial with the body with a radial connecting passage to redirect flow into a selected region. This redirected flow is isolated by upper and lower annular seals or piston rings. The axial flow channel is terminated with a flapper valve to serve as a one way check valve. This allows positioning of the shuttle to selectively stimulate, but prevents any back pressure/flow from reaching the tool. See attached sketch for a visual of features. Operation: The shuttle device can be attached to a workstring or to wireline for deployment. Additional latch features can be added to locate the tool into positions for stimulation and treatment. The shuttle is designed to allow for one direction of travel, stimulating each zone progressively one at a time as it lowered or raised in the well. Direction of deployment and operation can be set by the operator. Operations: The shuttle can be designed to selectively stimulate or fracture zones in a wellbore. The shuttle can also be used to locate and activate specialized tools and equipment with the application of flow or pressure. Seal assemblies within the shuttle can be designed to react to flow and effect a seal with the bore when flow or pressure is introduced. This seal actuation can then provide isolation and provide a means for selectively stimulating the targeted section without effecting other tools or areas surrounding the shuttle. Advantages: 1) Stimulate multiple zones in one pass/trip. 2) Can be used to eliminate down-hole mechanical sliding sleeves. 3) Replaces traditional workstring 4) Allows for fracturing operations with casing. 5) Can be used to actuate down-hole tools. 6) Does not require retrieval. 7) Device can be utilized in a proprietary work method for treatment

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Down-hole Shuttle Device of Selective Stimulation

A down-hole shuttle device that can be deployed in a well via. a workstring or wireline to selectively stimulate a targeted zone or activate a pre-installed down-hole device. This shuttle device can be used to support sleeveless stimulation operations, Frac with casing deployment, one trip frac/stim operatons, and remote tool activation.

Construction: Shuttle pig body has a main flow passage axial with the body with a radial connecting passage to redirect flow into a selected region. This redirected flow is isolated by upper and lower annular seals or piston rings. The axial flow channel is terminated with a flapper valve to serve as a one way check valve. This allows positioning of the shuttle to selectively stimulate, but prevents any back pressure/flow from reaching the tool. See attached sketch for a visual of features. Operation: The shuttle device can be attached to a workstring or to wireline for deployment. Additional latch features can be added to locate the tool into positions for stimulation and treatment. The shuttle is designed to allow for one direction of travel, stimulating each zone progressively one at a time as it lowered or raised in the well. Direction of deployment and operation can be set by the operator. Operations: The shuttle can be designed to selectively stimulate or fracture zones in a wellbore. The shuttle can also be used to locate and activate specialized tools and equipment with the applicatio...